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Top 5 Hitchlocks Every Caravan Owner Needs
Caravan theft remains a real concern for UK owners — Metropolitan Police freedom-of-information data collected across 30 UK police forces recorded roughly 500–570 caravan thefts a year between 2020 and 2022. A hitchlock is one of the most direct ways to make a caravan harder to tow away.
The Heavy Duty Alko 3004 Hitchlock is built from 4mm steel and engineered in the UK, with Milenco stating it exceeds both Sold Secure Gold and SCM MP03 standards — two of the more demanding independent security ratings a hitchlock can carry.
Compatibility
It's designed to fit Alko, AKS 2004 and AKS hitch systems, locking onto the coupling to help prevent the caravan being hitched up and towed away.
Security rating
Milenco describes it as tested to security levels 2.5 times stronger than former industry benchmarks, alongside its Sold Secure Gold and SCM MP03 approvals — and, as a solid steel lock fitted over the hitch, it also acts as a visible deterrent to anyone considering targeting the caravan.
As with any hitchlock, correct fit depends on your specific coupling type, so check that your caravan uses an Alko, AKS 2004 or AKS system before ordering.
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How do I know which hitchlock fits my caravan?
Check your hitch head type first — Al-Ko, Knott, or a non-stabilised hitch — since a hitchlock built for one type generally won't fit another. Milenco makes dedicated locks for each.
What's the difference between the heavy-duty and lightweight hitchlock options?
The heavy-duty options (AKS 161, Alko 3004, Knott KS30/35) are Sold Secure Gold rated and built from thicker steel for maximum tested security. The Lightweight AKS 3004 weighs just 1.1kg and is insurance approved (though not Sold Secure approved), making it better suited to daily convenience than long-term unattended storage.
Can I use a hitchlock while towing?
No. Milenco hitchlocks are designed to be fitted hitched or unhitched while the caravan is stationary, but must never be used on the hitch while actually towing.
What's the most affordable hitchlock option?
The Ball-Type Hitch Lock with Security Nuts, at under £26, is the most budget-friendly option in the range — though it's only suitable for non-stabilised 50mm/2" hitches, not stabiliser heads like Al-Ko or Knott.
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